There are six trims within the Audi A8 family. The standard-wheelbase A8 is offered with either a 3.0L V6 or 4.0L V8 form. The 3.0L model utilizes a supercharged 3.0L V6 that makes 333 horsepower and 325 pound-feet of torque, and is capable of accelerating to 60 mph in 5.5 seconds. Meanwhile 4.0L twin-turbocharged V8 makes 420 hp and 444 lb-ft of torque and can rocket to 60 mph in just 4.7 seconds.
Long-wheelbase A8 L models are the way to go for rear-seat comfort. They add about five inches of overall length and wheelbase--most of which provides added legroom in back. Long-wheelbase model...